12305-22100 INSULATOR SUB-ASSY, ENGINE MOUNTING, RH Fits 1230522100 Toyota RAV4 ACA2, CLA2, ZCA2

Product Description

Product Function Description

The engine mounting insulator is a critical component of your Toyota vehicle's powertrain support system. This right-hand mount secures the engine to the chassis while absorbing engine vibration, reducing noise, and controlling engine movement during acceleration, braking, and cornering . For Toyota RAV4 and compatible models equipped with transverse engine layouts, a properly functioning engine mount ensures smooth idle quality, stable handling, and protection of drivetrain components from excessive stress. This component is manufactured to factory specifications, providing the correct rubber compound and metal structure for reliable engine support .

When Should You Replace It?

Consider replacing your engine mounting insulator if you experience any of the following symptoms:

• Excessive vibration felt through the steering wheel, floor, or seats at idle 

• Clunking or thudding noise when shifting gears or during acceleration/deceleration 

• Visible cracks, tears, or fluid leaks from a hydraulic-style mount 

• The engine appears to rock or move excessively when revved

• Rough engagement when shifting from Park to Drive or Reverse 

• Noticeable engine movement under the hood during power-brake test

• Vehicle has high mileage (typically 60,000-100,000 km or more) and mounts have never been replaced 

Note: Engine mounts are wear items that degrade over time due to heat, age, and oil exposure. When one mount fails, other mounts may also be stressed and should be inspected. It is often recommended to inspect or replace related mounts as a set.

Product Specifications

Why Choose This Engine Mounting Insulator?

Restores Ride Comfort – A worn engine mount allows excessive engine vibration to transfer into the cabin. This new insulator restores proper vibration isolation for a smoother, quieter ride .

Eliminates Clunking and Shifting Issues – A failed mount allows the engine to move excessively during gear changes, causing clunks and rough engagement. Replacing it restores precise engine positioning and smooth shifting .

Prevents Drivetrain Stress – A collapsed mount can misalign the drivetrain, causing stress on CV joints, exhaust flex joints, and other components. Replacing a failing mount early helps prevent costly repairs .

Direct Replacement – Precision-engineered to match the original insulator specifications. Direct bolt-on replacement – no modifications required. Installation torque specifications: 52 N·m for mounting bolts .

Quality Construction – Manufactured with tuned rubber compound bonded to metal sleeves, providing the correct stiffness and damping characteristics for your Toyota .

Package Contents

1 x Engine Mounting Insulator Sub-Assembly. Note: Mounting bolts and nuts are NOT included unless stated. Please confirm compatibility with your Toyota model, year, and engine before purchasing. 

 Inspection & Maintenance Recommendations

The engine mount is a wear item that can degrade over time due to heat, age, and exposure to engine fluids. Regular inspection is recommended to prevent vibration and noise issues.

Common indicators that the engine mount may need replacement:

Inspection Checklist:

• Visually inspect the rubber portion of the mount for cracks or separation.

• Check for fluid contamination (oil or coolant) that can degrade the rubber.

• Check for excessive engine movement by revving the engine while observing the mount.

Maintenance Tips:

• Inspect engine mounts whenever other engine bay components are serviced.

• Replace engine mounts in pairs or as a set to ensure balanced vibration damping.

• Keep engine oil and coolant levels checked to prevent leaks that can damage mounts.

Quality Assurance & Service Commitment

Quality Assurance:
Every component is manufactured under controlled production processes to ensure consistent dimensional accuracy and material integrity. Each unit undergoes the following quality checks before packaging:

• Dimensional inspection – critical mounting points are verified against design specifications

• Material integrity check – rubber compound quality is verified for proper vibration absorption

• Surface finish inspection – corrosion protection and surface quality are visually verified

Packaging Protection:
Each engine mount is individually sealed in protective packaging to prevent contamination and physical damage during storage and transit. The packaging includes a clear part number label for easy identification.

Service Commitment: